[PATCH 0/1] MR2307: dlls/dwrite: Pass correct font key when adding glyph to cache.

[Philip Gruebele (＠pgruebele)]

Without this fix, the font cache was filling up with lots of duplicate entries,
and getting cache misses, thereby causing font-intensive applications
to be very slow (e.g. AvalonEdit) .
This fix provides 30x speed increase when processing glyphs.